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warnings and cautions
5 WARNINGS AND PRECAUTIONS Myelosuppression : Monitor complete blood count (CBC) and adjust the dose of PURIXAN for excessive myelosuppression. Consider testing in patients with severe myelosuppression or repeated episodes of myelosuppression for thiopurine S-methyltransferase (TPMT) or nucleotide diphosphatase (NUDT15) deficiency. Patients with homozygous-TPMT or homozygous-NUDT15 deficiency may require a dose reduction. ( 2.2, 5.1 ) Hepatotoxicity : Monitor transaminases, alkaline phosphatase and bilirubin. Withhold PURIXAN at onset of hepatotoxicity. ( 5.2 ) Immunosuppression :Response to all vaccines may be diminished and there is a risk of infection with live virus vaccines. Consult immunization guidelines for immunocompromised pediatrics. ( 5.3 ) Treatment Related Malignancies : Aggressive and fatal cases of hepatosplenic T-cell lymphoma have occurred. ( 5.4 ) Macrophage Activation Syndrome : Monitor for and treat promptly; discontinue PURIXAN. ( 5.5 ) Embryo-Fetal Toxicity : Can cause fetal harm. Advise patients of reproductive potential of the potential risk to a fetus and to use effective contraception. ( 5.6 , 8.1, 8.3 )
6 ADVERSE REACTIONS The most common adverse reaction (> 20%) is myelosuppression including anemia, neutropenia, lymphopenia and thrombocytopenia. Adverse reactions occurring in 5% to 20% of patients include anorexia, nausea, vomiting, diarrhea, malaise and rash. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Rare Disease Therapeutics, Inc., at 1-844-472-7389 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. The following clinically significant adverse reactions are described elsewhere in the labeling: Myelosuppression [see Warnings and Precautions (5.1) ] Hepatotoxicity [ [see Warnings and Precautions (5.2) ] Immunosuppression [ [see Warnings and Precautions (5.3) ] Treatment Related Malignancies [ [see Warnings and Precautions (5.4) ] Macrophage Activation Syndrome [ [see Warnings and Precautions (5.5) ]